if(NOT MERGE_FILES)
add_library(insets ${library_type} ${insets_sources} ${insets_headers})
-else(NOT MERGE_FILES)
+else()
lyx_const_touched_files(_allinone insets_sources)
add_library(insets ${library_type} ${_allinone_files})
-endif(NOT MERGE_FILES)
+endif()
project_source_group("${GROUP_CODE}" insets_sources insets_headers)